LAN9353 Datasheet, PDF (148/523 Pages) Microchip Technology – Interfaces at up to 200Mbps via Turbo MII

LAN9353
9.2.20.19 PHY x Cable Length Register (PHY_CABLE_LEN_x)
Index (In Decimal): 28
Size:
16 bits
Bits
Description
15:12
Cable Length (CBLN)
This four bit value indicates the cable length. Refer to Section 9.2.15.2,
"Matched Cable Diagnostics," on page 116 for additional information on the
usage of this field.
Note:
This field indicates cable length for 100BASE-TX linked devices
that do not have an open/short on the cable. To determine the
open/short status of the cable, the PHY x TDR Patterns/Delay
Control Register (PHY_TDR_PAT_DELAY_x) and PHY x TDR
Control/Status Register (PHY_TDR_CONTROL_STAT_x) must be
used. Cable length is not supported for 10BASE-T links. Refer to
Section 9.2.15, "Cable Diagnostics," on page 113 for additional
information.
11:0 RESERVED - Write as 100000000000b, ignore on read
Type
RO
R/W
Default
0000b
-
DS00001925A-page 148
 2015 Microchip Technology Inc.